| Influence of Lanthanum on Phosphorus Uptake and Its Chemical Fractions in Rice Crop （Oryza Sativa） |
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| 引用本文： | 谢祖彬,朱建国,褚海燕,张雅丽,曾青,曹志洪.Influence of Lanthanum on Phosphorus Uptake and Its Chemical Fractions in Rice Crop （Oryza Sativa）[J].中国稀土学报(英文版),2003,21(2):180-184. |
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| 作者姓名： | 谢祖彬 朱建国 褚海燕 张雅丽 曾青 曹志洪 |
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| 作者单位： | Laboratory of Material Cycling in Pedosphere，Institute of Soil Science，Chinese Academy of Sciences，Laboratory of Material Cycling in Pedosphere，Institute of Soil Science，Chinese Academy of Sciences，Laboratory of Material Cycling in Pedosphere，Institute of Soil Science，Chinese Academy of Sciences，Laboratory of Material Cycling in Pedosphere，Institute of Soil Science，Chinese Academy of Sciences，Laboratory of Material Cycling in Pedosphere，Institute of Soil Science，Chinese Academy of Sciences，Laboratory of Material Cycling in Pedosphere，Institute of Soil Science，Chinese Academy of Sciences Nanjing 210008，China，Nanjing 210008，China，Nanjing 210008，China，Nanjing 210008，China，Nanjing 210008，China，Nanjing 210008，China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina (2 9890 2 82 )andtheFoundationofEcologicalExperi
mentalStationofRedSoil，theChineseAcademyofSiences |
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| 摘 要： | Plantgrowthisrelatednotonlytothetotalphos phoruscontentinplantbutalsotoitschemicalfrac tions .Someresearchersbelievedthatdifferentchemi calfractionsplayeddifferentrolesinplantgrowth ,andthatplantwithlowerinorganic Pcontenthashigherphosphorusmetabolicpotential1] .Wang2 ] foundrareearthelements nitrateincreasesphosphorusuptakebywheat (TritcumaestvicumL .)inHoaglandnutrientsolutionculture .Wahidetal .3] showedthatrareearthelementsappliedinsoildecreasesphosphoruscontentofcoconutseedlings .Dia…
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| 关 键 词： | 农作物 稀土 吸磷 EDTA 滴定分析 化学分数 |
Influence of Lanthanum on Phosphorus Uptake and Its Chemical Fractions in Rice Crop (Oryza Sativa) |
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| Xie Zubin,Zhu Jianguo ,Chu Haiyan,Zhang Yali,Zeng Qing,Cao Zhihong.Influence of Lanthanum on Phosphorus Uptake and Its Chemical Fractions in Rice Crop (Oryza Sativa)[J].Journal of Rare Earths,2003,21(2):180-184. |
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| Authors: | Xie Zubin Zhu Jianguo Chu Haiyan Zhang Yali Zeng Qing Cao Zhihong |
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| Affiliation: | Xie Zubin,Zhu Jianguo *,Chu Haiyan,Zhang Yali,Zeng Qing,Cao Zhihong |
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| Abstract: | The effects of lanthanum on rice growth, phosphorus uptake and phosphorus chemical fractions in rice were studied with split-root solution culture. Results show that low concentration of La (0.05～1.5 mg*L-1) significantly increases rice yield while high La concentration (9～30 mg*L-1) markedly decreases rice yield. When La concentration is 0.05～0.75 mg*L-1, La increases stem and root dry weight, but the difference is not statistically significant. La significantly increases EDTA-P and inorganic-P content in the stem and root. More than 80% of the increase of phosphors content in roots attributing to increase of EDTA-P and inorganic-P. Low La concentration (0.05～0.75 mg*L-1) increases nucleic-P content in root, but high La concentration (30 mg*L-1) decreases nucleic-P and ester-P content in root. The residue-P content increases in the root and stem. Also the relationship between the chemical fractions of phosphorus and its uptake by rice was discussed. |
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| Keywords: | botany lanthanum phosphorus uptake chemical fractions rare earths |
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